<?php //图片添加文字水印 /*$bigImgPath = 'background.png'; $img = imagecreatefromstring(file_get_contents($bigImgPath)); $font = 'MSYH.TTF';//字体,字体文件需保存到相应文件夹下 $black = imagecolorallocate($img, 0, 0, 0);//字体颜色 RGB $fontSize = 12; //字体大小 $circleSize = 60; //旋转角度 $left = 50; //左边距 $top = 120; //顶边距 imagefttext($img, $fontSize, $circleSize, $left, $top, $black, $font, 'zhix.net| 智昕网络'); list($bgWidth, $bgHight, $bgType) = getimagesize($bigImgPath); switch ($bgType) { case 1: //gif header('Content-Type:image/gif'); imagegif($img); break; case 2: //jpg header('Content-Type:image/jpg'); imagejpeg($img); break; case 3: //png header('Content-Type:image/png'); //imagepng($img,"images/circle.png"); //在 images 目录下就会生成一个 circle.png 文件,上面也可设置相应的保存目录及文件名。 imagepng($img); break; default: break; } imagedestroy($img); */ //图片合成 /*$bigImgPath = 'background.png'; $qCodePath = 'code.png'; $bigImg = imagecreatefromstring(file_get_contents($bigImgPath)); $qCodeImg = imagecreatefromstring(file_get_contents($qCodePath)); imagesavealpha($bigImg,true);//假如是透明PNG图片,这里很重要 意思是不要丢了图像的透明<code class="php spaces"></code> list($qCodeWidth, $qCodeHight, $qCodeType) = getimagesize($qCodePath); // imagecopymerge使用注解 imagecopymerge($bigImg, $qCodeImg, 50, 50, 0, 0, $qCodeWidth, $qCodeHight, 100); list($bigWidth, $bigHight, $bigType) = getimagesize($bigImgPath); switch ($bigType) { case 1: //gif header('Content-Type:image/gif'); imagegif($bigImg); break; case 2: //jpg header('Content-Type:image/jpg'); imagejpeg($bigImg); break; case 3: //jpg header('Content-Type:image/png'); //imagepng($bigImg,"images/circle.png"); //在 images 目录下就会生成一个 circle.png 文件,上面也可设置相应的保存目录及文件名。 imagepng($bigImg); break; default: # code... break; } imagedestroy($bigImg); imagedestroy($qcodeImg); */ //如果感觉上面的二维码太大 那么可以先生成一张小的二维码图片,下面是处理的方法 //等比例生成图片 //$filepath图片路径,$percent缩放百分比 function imagepress($filepath,$percent='0.5'){ // 图片类型,这里的二维码是PNG的 所以使用PNG类型 header('Content-Type: image/png'); // 获得新的图片大小 list($width, $height) = getimagesize($filepath); //取图片信息 $new_width = $width * $percent; $new_height = $height * $percent; // 重新取样 $image_p = imagecreatetruecolor($new_width, $new_height); $image = imagecreatefrompng($filepath); imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height); // 输出 return imagejpeg($image_p, 'code1.png', 100); //这里的名命可根据需要设置 } $bigImgPath = 'background.png'; $qCodePath = 'code.png'; imagepress($qCodePath); $qCodePath = 'code1.png'; $bigImg = imagecreatefromstring(file_get_contents($bigImgPath)); $qCodeImg = imagecreatefromstring(file_get_contents($qCodePath)); list($qCodeWidth, $qCodeHight, $qCodeType) = getimagesize($qCodePath); // imagecopymerge使用注解 imagecopymerge($bigImg, $qCodeImg, 90, 90, 0, 0, $qCodeWidth, $qCodeHight, 100); list($bigWidth, $bigHight, $bigType) = getimagesize($bigImgPath); switch ($bigType) { case 1: //gif header('Content-Type:image/gif'); imagegif($bigImg); break; case 2: //jpg header('Content-Type:image/jpg'); imagejpeg($bigImg); break; case 3: //jpg header('Content-Type:image/png'); //imagepng($bigImg,"images/circle.png"); //在 images 目录下就会生成一个 circle.png 文件,上面也可设置相应的保存目录及文件名。 imagepng($bigImg); break; default: # code... break; } imagedestroy($bigImg); imagedestroy($qcodeImg);
PHP图片加水印文字及图片合成缩放
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